Social media is pervasive in today's culture. It is nearly impossible to avoid it completely. Opinions are divided on whether this has made life better or worse. Young people today are the first generations to grow up with this new form of communication and entertainment. Will it be helpful or harmful to them? Augmented by full-color photographs and informative fact boxes, this engaging narrative explores this question so readers understand both sides of the issue. This is a key element of being able to form intelligent opinions, helping your readers make informed decisions about their social media use.

In this play, five animals who live in the forest are worrying about the effects of a fallen tree that is blocking their stream. Helpful or harmful? describes the relationships between various forest plants and animals, explaining why they are helpful or harmful.

Some people suffer from chronic, debilitating disorders for which no conventional treatment brings relief. Can marijuana ease their symptoms? Would it be breaking the law to turn to marijuana as a medication? There are few sources of objective, scientifically sound advice for people in this situation. Most books about marijuana and medicine attempt to promote the views of advocates or opponents. To fill the gap between these extremes, authors Alison Mack and Janet Joy have extracted critical findings from a recent Institute of Medicine study on this important issue, interpreting them for a general audience. Marijuana As Medicine? provides patientsâ€"as well as the people who care for themâ€"with a foundation for making decisions about their own health care. This empowering volume examines several key points, including: Whether marijuana can relieve a variety of symptoms, including pain, muscle spasticity, nausea, and appetite loss. The dangers of smoking marijuana, as well as the effects of its active chemical components on the immune system and on psychological health. The potential use of marijuana-based medications on symptoms of AIDS, cancer, multiple sclerosis, and several other specific disorders, in comparison with existing treatments. Marijuana As Medicine? introduces readers to the active compounds in marijuana. These include the principal ingredient in Marinol, a legal medication. The authors also discuss the prospects for developing other drugs derived from marijuana's active ingredients. In addition to providing an up-to-date review of the science behind the medical marijuana debate, Mack and Joy also answer common questions about the legal status of marijuana, explaining the conflict between state and federal law regarding its medical use. Intended primarily as an aid to patients and caregivers, this book objectively presents critical information so that it can be used to make responsible health care decisions. Marijuana As Medicine? will also be a valuable resource for policymakers, health care providers, patient counselors, medical faculty and studentsâ€"in short, anyone who wants to learn more about this important issue.

Your landscape hosts a diverse, mini food chain of insects and other tiny life forms. Some survive by eating your prized plantings. But many others help you by eating the "bad bugs" - and some do no harm. Learn which bugs to keep and which ones to control with this updated version of a favorite ID deck. Each colorful photo is clearly marked helpful, harmful, or harmless to remove the guesswork. Fresh information, new photos, and a convenient new format complete this exciting revision of Helpful or Harmful.

With the ever-increasing incidence of harmful cyanobacterial algal blooms, this monograph has added urgency and will be essential reading for all sorts of researchers, from neuroscientists to cancer research specialists. The volume contains the proceedings of the 2005 International Symposium on Cyanobacterial Harmful Algal Blooms, and has been edited by H. Kenneth Hudnell, of the US Environmental Protection Agency. It contains much of the most recent research into the subject.

Dive into the microscopic world with 'Bad Bacteria! Bacteria Cells, Helpful vs. Harmful Bacteria | Eubacteria and Archaebacteria.' This enlightening book for middle school students demystifies bacteria's roles in our lives and environment, crucial for the US STEM curriculum. Learn about the fascinating differences between good and bad bacteria, the unique worlds of eubacteria and archaebacteria, and their impact on Earth's ecosystems. A must-read for budding scientists eager to explore the unseen!

Examines both helpful and harmful insects.

First Published in 2012. Routledge is an imprint of Taylor & Francis, an informa company.